Lewis County

Air Stagnation Advisory issued December 29 at 11:45AM PST until January 1 at 12:00PM PST by NWS Spokane WA

December 29th, 11:45 AM — January 1st, 12:00 PM

* WHAT...Stagnant conditions will have potential to trap pollutants near the ground with deteriorated air quality. * WHERE...Portions of North and North Central Idaho and North Central, Northeast, and Southeast Washington. * WHEN...Until noon PST Thursday. * IMPACTS...Periods of air stagnation can lead to the buildup of pollutants near the surface.

Air Stagnation Advisory issued December 29 at 11:23AM PST until January 1 at 12:00PM PST by NWS Missoula MT

December 29th, 11:23 AM — January 1st, 12:00 PM

* WHAT...Stagnation conditions will trap pollutants, leading to deteriorating air quality. * WHERE...Lower Hells Canyon/Salmon River Region, Orofino/Grangeville Region, Southern Clearwater Mountains, and Northern Clearwater Mountains. * WHEN...Until noon PST Thursday. * IMPACTS...Periods of air stagnation can lead to the build up of pollutants near the surface.

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